Its not really a surprise that comments would be expressed about the Gannet.
Its survived since the 1960’s as a complete section so for people to express surprise at the cutting isn’t really a shock. In terms of perspective – a Canberra clearly doesn’t loose much of its perspective when its removed from the rest of the aircraft in much the same way that a Lightning forward fuselage is still an impressive piece and climbing exercise due to its size.
The Gannet to my mind certainly looses its visual impact from the fuselage slice – but as you say its a spare part and hence of limited value anyway!